Congrats to the Curiosity Rover, which has driven 12.14 miles in the 2,127 Martian days, or "sols," since it arrived on the red planet #OTD in 2012. 🎉 Happy sixth birthday and we hope you're doing OK out there all alone... . . . . . . . . . . #mars #curiosity #rover #marsrover #curiosityrover #anniversary #happybirthday #onthisday #science #today #todayinscience #space #discover #explore #exploration #machines #info #aliens